Known plaintext - XOR

20 Points  0x0

For this challenge you will need to decypher a simple XORed picture.

Author

Ryscrow,  

Level  Difficulty

Validations

5118 Challengers 3%

Note  Notation

227 Votes

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Challenge Results Challenge Results

Pseudo Challenge Lang date
Wei   Known plaintext - XOR 27 March 2020 at 22:51
rostale   Clair connu - XOR 27 March 2020 at 21:19
il2did   Known plaintext - XOR 27 March 2020 at 19:04
pizzaboi   Known plaintext - XOR 26 March 2020 at 17:51
Fr0g   Clair connu - XOR 26 March 2020 at 15:13
itchy   Known plaintext - XOR 25 March 2020 at 18:06
ex0dus   Known plaintext - XOR 24 March 2020 at 19:41
Goujon   Clair connu - XOR 24 March 2020 at 15:25
tatta   Known plaintext - XOR 24 March 2020 at 11:31
ericl   Clair connu - XOR 23 March 2020 at 22:37

 49 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 44759 5 Xartrick 10
pas_valide Encoding - UU 21% 35342 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 35940 5 g0uZ 6
pas_valide Hash - SHA-2 11% 18181 5 koma 4
pas_valide Shift cipher 7% 11031 10 m31z0nyx 7
pas_valide Pixel Madness 5% 8762 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 4877 15 Lu33Y 10
pas_valide File - PKZIP 4% 6527 15 g0uZ 6
pas_valide Monoalphabetic substitution - Caesar 5% 8314 15 Arod 4
pas_valide Known plaintext - XOR 3% 5118 20 Ryscrow 5
pas_valide Code - Pseudo Random Number Generator 2% 1933 20 Tosh 5
pas_valide File - Insecure storage 1 4% 5458 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 5632 20 Arod 3
pas_valide System - Android lock pattern 3% 3609 20 Silentd 4
pas_valide Transposition - Rail Fence 2% 3416 20 YellowS4 3
pas_valide AES - CBC - Bit-Flipping Attack 1% 485 25 Tie21 1
pas_valide AES - ECB 1% 1445 25 cez40 4
pas_valide LFSR - Known plaintext 1% 366 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2365 25 HacKSpider 5
pas_valide RSA - Decipher Oracle 1% 717 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1613 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1952 25 koma 6
pas_valide Initialisation Vector 1% 1075 25 manticore, notfound404 5
pas_valide GEDEFU 1% 342 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 167 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 804 30 sambecks 1
pas_valide RSA - Common modulus 1% 810 30 franb 2
pas_valide Service - Hash length extension attack 1% 501 30 koma 1
pas_valide AES - 4 Rounds 1% 126 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 94 35 Jrmbt 1
pas_valide RSA - Padding 1% 149 35 Tosh 0
pas_valide RSA - Signature 1% 27 35 stan1slas 0
pas_valide AES128 - CTR 1% 423 40 Tosh 1
pas_valide Discrete logarithm problem 1% 572 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 116 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 58 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 708 40 franb 3
pas_valide AES - Fault attack #1 1% 68 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 119 50 peyman 1
pas_valide ECDHE 1% 128 60 Tosh 2
pas_valide RSA - Lee cooper 1% 44 60 blackndoor, Synacktiv 0
pas_valide Service - CBC Padding 1% 729 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 273 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 92 60 Cryptanalyse 3
pas_valide AES - Weaker variant 1% 42 70 Cryptanalyse 1
pas_valide Hash - SHA-3 1% 73 75 Revenger 1
pas_valide AES - Fault attack #2 1% 48 80 Cryptanalyse 1
pas_valide AES-PMAC 1% 11 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 16 100 Tosh 0